// SPDX-License-Identifier: GPL-2.0 /* * Copyright ( c ) 2005 Silicon Graphics , Inc . * All Rights Reserved . #ifndef __XFS_EXPORT_H__#define __XFS_EXPORT_H__/* * Common defines for code related to exporting XFS filesystems over NFS . * * The NFS fileid goes out on the wire as an array of * 32 bit unsigned ints in host order . There are 5 possible * formats . * * ( 1 ) fileid_type = 0 x00 * ( no fileid data ; handled by the generic code ) * * ( 2 ) fileid_type = 0 x01 * inode - num * generation * * ( 3 ) fileid_type = 0 x02 * inode - num * generation * parent - inode - num * parent - generation * * ( 4 ) fileid_type = 0 x81 * inode - num - lo32 * inode - num - hi32 * generation * * ( 5 ) fileid_type = 0 x82 * inode - num - lo32 * inode - num - hi32 * generation * parent - inode - num - lo32 * parent - inode - num - hi32 * parent - generation * * Note , the NFS filehandle also includes an fsid portion which * may have an inode number in it . That number is hardcoded to * 32 bits and there is no way for XFS to intercept it . In * practice this means when exporting an XFS filesystem with 64 bit * inodes you should either export the mountpoint ( rather than * a subdirectory ) or use the " fsid " export option . struct xfs_fid64 {/* This flag goes on the wire. Don't play with it. */ #define XFS_FILEID_TYPE_64FLAG 0 x80 /* NFS fileid has 64bit inodes */ struct inode *xfs_nfs_get_inode(struct super_block *sb, u64 ino, u32 gen);#endif /* __XFS_EXPORT_H__ */
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